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node_modules/@protobufjs/eventemitter/tests/index.js

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+var tape = require("tape");
+
+var EventEmitter = require("..");
+
+tape.test("eventemitter", function(test) {
+
+    var ee = new EventEmitter();
+    var fn;
+    var ctx = {};
+
+    test.doesNotThrow(function() {
+        ee.emit("a", 1);
+        ee.off();
+        ee.off("a");
+        ee.off("a", function() {});
+    }, "should not throw if no listeners are registered");
+    
+    test.equal(ee.on("a", function(arg1) {
+        test.equal(this, ctx, "should be called with this = ctx");
+        test.equal(arg1, 1, "should be called with arg1 = 1");
+    }, ctx), ee, "should return itself when registering events");
+    ee.emit("a", 1);
+
+    ee.off("a");
+    test.same(ee._listeners, { a: [] }, "should remove all listeners of the respective event when calling off(evt)");
+
+    ee.off();
+    test.same(ee._listeners, {}, "should remove all listeners when just calling off()");
+
+    ee.on("a", fn = function(arg1) {
+        test.equal(this, ctx, "should be called with this = ctx");
+        test.equal(arg1, 1, "should be called with arg1 = 1");
+    }, ctx).emit("a", 1);
+
+    ee.off("a", fn);
+    test.same(ee._listeners, { a: [] }, "should remove the exact listener when calling off(evt, fn)");
+
+    ee.on("a", function() {
+        test.equal(this, ee, "should be called with this = ee");
+    }).emit("a");
+
+    test.doesNotThrow(function() {
+        ee.off("a", fn);
+    }, "should not throw if no such listener is found");
+
+    test.end();
+});